svn commit: r210561 - projects/sv/sys/net
seanbru at yahoo-inc.com
Sun Aug 1 19:45:48 UTC 2010
On Thu, 2010-07-29 at 14:06 -0700, Ed Maste wrote:
> On Wed, Jul 28, 2010 at 03:10:31PM +0000, Attilio Rao wrote:
> > Log:
> > Initial import of the netdump files.
> > They still need a lot of polishing and cleanup so they might not be
> > considered definitive at all.
> This code is a port to recent FreeBSD of Darrell Anderson's network
> crashdump support, which was done in the 4.x days. I can't find a
> current website with the original versions but archive.org has a cache
> of course:
> Quoting from the old readme:
> Netdump provides FreeBSD kernel crash dumping over the network.
> Netdump is a FreeBSD kernel module client and user-level server.
> A normal kernel crash writes a raw dump of memory to a dedicated
> partition (usually the swap partition) using a low-level disk routine,
> and then copies that raw dump into a file (via savecore) during the
> following boot process.
> Netdump replaces the standard dump routine. During a crash, a netdump
> client broadcasts to locate a netdump server, then sends the dump as
> UDP/IP packets (with retransmission after loss). The netdump server
> creates a dump file suitable for gdb. If netdump fails (for example,
> no netdump server is located), a normal disk dump is performed.
> There is cleanup work to be done still, but we plan to have this in
> shape for 9.0.
Excellent. I'll start tracking this over here at Yahoo.
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